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Proceedings Article

Blazed phase liquid crystal beam steering

[+] Author Affiliations
Roy M. Matic

Hughes Research Labs. (USA)

Proc. SPIE 2120, Laser Beam Propagation and Control, 194 (June 8, 1994); doi:10.1117/12.177691
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From Conference Volume 2120

  • Laser Beam Propagation and Control
  • Hugo Weichel; Lewis F. DeSandre
  • Los Angeles, CA | January 23, 1994

abstract

In this paper we describe a novel liquid crystal device for rapidly steering laser beams for high-power and large-aperture applications. The device consists of an array of optical phase modulators that contain a thin, active, liquid crystal layer sandwiched between two substrates. The unique aspect of the device is that each phase modulator can produce a linear (blazed) phase gradient, rather than the constant phase profile typical of other liquid crystal beam- steering devices. It is designed for use over a wide range of wavelengths and is particularly well suited for the deflection of short-wavelength laser beam. In this paper, we will describe device design, theoretical performance (diffraction efficiency and time response), and present experimental results of a device built to deflect a 1.064-micrometers laser beam.

© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Roy M. Matic
"Blazed phase liquid crystal beam steering", Proc. SPIE 2120, Laser Beam Propagation and Control, 194 (June 8, 1994); doi:10.1117/12.177691; http://dx.doi.org/10.1117/12.177691


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